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The new Nissan Leaf is being built at the company's Smyrna, Tennessee, Vehicle Assembly Plant -- helping to cut the price of its electric vehicle. | Photo courtesy of Sarah Gerrity, Energy Department.

Date taken: 2013-01-31 13:49

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Energy Secretary Steven Chu discusses the features of the 2014 Cadillac ELR -- the luxury car built built on the same powertrain platform as the Chevy Volt. | Photo courtesy of Sarah Gerrity, Energy Department.

Date taken: 2013-01-31 13:57

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Energy Secretary Steven Chu discusses some of the features of the Chevy Spark with the Chevy representative. | Photo courtesy of Sarah Gerrity, Energy Department.

Energy Secretary Steven Chu announces the new Workplace Charging Challenge, a collaborative effort to increase the number of U.S. employers offering workplace charging tenfold in the next five years. | Photo courtesy of Sarah Gerrity, Energy Department.

Date taken: 2013-01-31 14:41

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Energy Secretary Steven Chu was joined by several of the founding Workplace Charging Challenge partners and ambassadors at the Washington Auto Show. | Photo courtesy of Sarah Gerrity, Energy Department.